A woman views the Chinese social media website Weibo at a cafe in Beijing on April 2, 2012.  China's move to shut down websites and curb rumours of a political coup reveal growing nervousness ahead of the nation's first leadership transition in the social media age. The crackdown on the media and Internet is likely to remain in force until President Hu Jintao and other top leaders step down from their Communist Party posts late this year in a 10-yearly leadership change.               AFP PHOTO/Mark RALSTON (Photo credit should read MARK RALSTON/AFP/Getty Images)